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CLINICAL ADVANTAGES

of VERASENSE™ Sensor-Assisted Total Knee Arthroplasty (TKA)

VERASENSE is improving the way surgeons are able to balance the knee during primary and revision TKAs and is resulting in improved patient outcomes.

CAN YOU FEEL A BALANCED KNEE?

Knee Balancing without VERASENSE

OrthoSensor Clinical Research and Development conducted a multicenter blinded controlled trial involving 324 patients from 11 surgeons within six institutions. The surgeons were first asked to balance the knee of patients while blinded to the sensor measurement. For the unblinded cohort, the surgeons used VERASENSE to guide their decisions regarding ligament adjustments and implant positioning.

The results of the study showed that without the use of VERASENSE, surgeons are only able to balance the knee approximately 50% of the time.1-2

Knee Balancing with VERASENSE

Surgeons are able to achieve a quantitative balanced knee in 92-100% of cases, beyond the learning curve, by using VERASENSE and combining multiple technologies, and surgical techniques.

A presentation by Dr. Alex Gordon (ISTA, 2018) examined a cohort of 17 consecutive TKAs where he combined the use of robotics and sensor technologies. 92% of the cases obtained a balanced state after initial cuts and sensor-guided adjustments.2

A publication by Cho et al. (2018) evaluated 84 patients who underwent TKA using VERASENSE with measured resection and modified gap balancing technique. The authors were able to achieve a balanced knee in 94% of cases. Measured resection TKA showed less balanced knees and also required additional procedures compared to modified gap balancing TKA.19

A study by Dr. Samuel Macdessi collected data on initial and final intercompartmental pressure differences for 90 consecutive cases and was recorded before and after knee ligament balancing. The first 45 patients (group 1) were compared to the last 45 patients (group 2). Group 1 had 10 unbalanced knees in the final pressure difference assessment, while all cases in group 2 were balanced (P < 0.001) (100%).18

MITIGATING 90-DAY POST-OP COMPLICATIONS THROUGH SOFT TISSUE BALANCE

VERASENSE patients require 67% fewer MUAs post-op. Manipulation under anesthesia (MUA) is a common treatment for stiffness and arthrofibrosis post-TKA. Studies show a higher degree of success when treatment is performed earlier (<3 MO.) post-TKA; however, bundled payment models focusing on a 90-day episode of care may not provide reimbursement within this timeframe.3,35

PROMs AND PHYSICAL THERAPY IMPROVEMENTS WITH VERASENSE

Enabling a surgeon to make evidence-based decisions regarding soft tissue balance, use of VERASENSE has shown statistically significant improvements in patient-reported outcome measurements (PROMS) and physical therapy  (PT) performance during early post-op recovery and rehabilitation for TKA. VERASENSE patients require less PT and show a quicker rate of clinical improvement post-op. These improvements during recovery and rehab should translate to shorter treatments and lower overall costs in the complete TKA episode of care.3,20

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CLINICAL HIGHLIGHT:

Reduction In Post-Op Complications

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CLINICAL HIGHLIGHT:

Blinded Control Trial

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CLINICAL HIGHLIGHT:

Improved

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REFERENCES

  1. Golladay et al. (2018, October). Sensor-Assisted Balancing: Does the Surgeon on Need the Extra Sense? Podium Presentation, AOA, Perth.
  2. Gordon, A. (2018, October). Do Balanced Knees Perform Better Clinically? Podium presentation, ISTA, London.
  3. Conditt, et al. (2018, October). Can a Balanced Knee Save Money Post-Operatively? Podium presentation, ISTA, London.
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